Hooker BlackHeart Cast Iron LS Swap Exhaust Manifolds

Hooker BlackHeart cast iron exhaust manifolds are purpose-engineered for GM LS engine swap and replacement applications, delivering the ideal combination of compact packaging, proven durability, and improved exhaust flow. Designed to integrate seamlessly with the broader Hooker and Holley LS swap ecosystem, these manifolds are the go-to solution for builders who demand a tough, quiet, and fitment-friendly exhaust option without the complexity of long-tube headers.

Key Features:

• Cast from Hi-Silicon-Moly ductile iron for exceptional durability, corrosion resistance, and long-term leak-free performance under extreme thermal cycling
• Tight-tuck, low-profile design hugs the engine block closely for maximum compatibility across a wide range of LS swap chassis and custom build applications
• Contoured internal passages aim exhaust flow directly toward the exit port for improved scavenging efficiency and stronger performance
• Shorty manifold geometry allows exhaust tubing to route close to frame rails and floor pans, preserving valuable ground clearance
• Two-bolt exit flange configuration matches E-rod exhaust manifold geometry, enabling use of factory-style gaskets and fasteners
• Quieter operation and reduced under-hood radiated heat compared to traditional tubular headers
• Designed to complement Hooker engine swap mount plates and Holley LS swap oil pans for a complete, cohesive swap solution
• Available in multiple exit configurations and finish options across the product line to suit a wide variety of swap applications and chassis constraints
• Includes nickel-plated steel mating flanges, MLS mating flange gaskets, and flange hardware for easy connection to Holley adapter pipe kits or custom exhaust fabrication

Whether you are performing an LS swap into a classic muscle car, hot rod, truck, or custom build, Hooker BlackHeart cast iron manifolds deliver proven exhaust performance with the packaging flexibility that tubular headers simply cannot match. Their robust construction withstands the demands of street-driven, high-performance applications while maintaining excellent sealing characteristics for years of reliable service. Select the variant that best fits your specific swap configuration — individual listings include full configuration details.